Bersa barrel replacement

[liketoshoot]

I bought a Bersa 23 .22 lr pistol recently and was wondering if the barrel can be removed for replacement. When disassembled, it looks like it is fixed to the gun frame.

This model is exactly the same as the Thunder .380 except with the caliber difference. If the .380 barrel can be changed, does this mean the same for the .22 lr?

Thanks.